Add google colab support for notebooks (#7560)

* Add google colab support for notebooks

* Add google colab support for CustomRetriever Notebook.

* Add google colab support for query_engine Notebooks.

* Add google colab support for response_synthesizers Notebooks.

* Add google colab support for query_transformations Notebooks.

* Add google colab support for retrievers Notebooks.

* Add google colab support for managed Notebooks.

* Add google colab support for callbacks Notebooks.

* Add google colab support for chat engine Notebooks.

* Add google colab support for citation Notebooks.

* Add google colab support for composable indices Notebooks.

* Fix formatting issues

* Add google colab support for llm Notebooks.

* Add google colab support for customization Notebooks.

* Add google colab support for data connectors" Notebooks.

* Add google colab support for docstore Notebooks.

* Fix formatting issues and Add google colab support for embeddings Notebooks.

* Fix format issues

* Add google colab support for Evaluation Notebooks

* Add google colab support for finetuning Notebooks

* Add google colab support for low level Notebooks

* Add google colab support for index_structs notebooks

* Add google colab support for llm notebooks

* Add google colab support for metadata extraction notebooks

* Add google colab support for tools  notebooks

* Fix linting issues

* Add google colab support for vector store notebooks.

* Add google colab support for usecases

* Add google colab support for output parsing notebooks

* Add google colab notebook support for node postprocessors notebook

* Add google colab support for agent and anlysis notebooks

* Update download data code

* Update data links

* Add google colab support

* Add google colab support

* Add google colab support for notebooks

---------

Co-authored-by: Ravi Theja <ravi.theja@inmobi.com>